Grape Seed Extract

Active Substances: Oligomeric proanthoyanidins (OPCS)
Standard: OPC 95%

Description:

Grape Seed Extract is a rose reddish brown powder.

Proanthocyanidins and catechins extracted from grape seeds have been shown 
in numerous studies to have various beneficial effects, including: 
inhibition of  enzymes that can damage the integrity and elasticity 
of capillaries, skin and  other tissues. In inhibiting the harmful 
enzymes collagenase and elastase, the  active ingredients in grape 
seed extract can help to keep the important collagen and elastin in
various tissues from degrading. In particular, the  capillaries are 
allowed to retain their flexibility (to let red blood cells through tight places) and 
integrity (so that blood does not inappropriately  leak through the 
capillary wall).



Analysis:

1% in water (25°C)		insoluble<=5.0%		1.83%
1% in ethanol (25°C)		insoluble<=5.0%		2.18%
Acid Solubility			soluble			soluble
Powder Size			>98% through 100 mesh	100mesh
After burn			                <0.1%			0.03%
PH (4% in water)		                2.5-4.5			3.4
Loss on drying			<5.0%			4.52%
Sulfated ash			<0.5%			0.2%
Iron				<10ppm			<10ppm
Arsenic				<2ppm			<2ppm
Heavy metals			<10ppm			<10ppm
Total polyphenols (UV)		>95.0%			98.20%
Procyanidolic value (UV)	                 >95.0		                136